Review on Nunn Bush Drexel Brown Men's Slip-On Loafers - Stylish & Comfortable Shoes by Jaime Bustamante

According to the product description, when I ordered my order the material should be 100% leather, but the shoes say the material is "LEATHER AND PU UPPER" For me the description is not correct for some reason. Please explain why the description is wrong. The price is suitable for 100% leather shoes, not including leather and plastic shoes.